white roof

[raycarey]

are white roofing materials readily available in thailand?

Returning to their ranch-style house in Sacramento after a long summer workday, Jon and Kim Waldrep were routinely met by a wall of heat.

“We’d come home in the summer, and the house would be 115 degrees, stifling,” said Mr. Waldrep, a regional manager for a national company.

He or his wife would race to the thermostat and turn on the air-conditioning as their four small children, just picked up from day care, awaited relief.
All that changed last month. “Now we come home on days when it’s over 100 degrees outside, and the house is at 80 degrees,” Mr. Waldrep said.

Their solution was a new roof: a shiny plasticized white covering that experts say is not only an energy saver but also a way to help cool the planet.

Relying on the centuries-old principle that white objects absorb less heat than dark ones, homeowners like the Waldreps are in the vanguard of a movement embracing “cool roofs” as one of the most affordable weapons against climate change.

Studies show that white roofs reduce air-conditioning costs by 20 percent or more in hot, sunny weather. Lower energy consumption also means fewer of the carbon dioxide emissions that contribute to global warming.

What is more, a white roof can cost as little as 15 percent more than its dark counterpart, depending on the materials used, while slashing electricity bills.

http://www.nytimes.com/2009/07/30/sc...s.html?_r=1&em

[friscofrankie]

I've often wondered why you saw darker, heat absorbing colors for roofs. I would go a for a white roof on my place if available. We've been looking for lighter colors, not much available, where I've looked anyway.

[Cujo]

a few cans of white paint?

[Thetyim]

Why do they not make roofing tiles from UV resistant plastic.?
They would be lighter and longer lasting

[friscofrankie]

Think people would be put off by "plastic" roofs? might work dynamite but a hard sell.

[matsalleh]

Why do they not make roofing tiles from UV resistant plastic.?
They would be lighter and longer lasting

Wouldn't be eggsaggly a "fire retarding" system, wouldn't it

[Thetyim]

^
Thank you, I hadn't thought about that

[mordred]

I used to live in Arizona and it is hot as hell there. They do make plastic roofing tiles.
RPM PLASTIC ROOFING

there is also a polyurethane foam coating in a white color that expands, can be sprayed on, and is a great barrier that is used in the states.

Roof Coatings - Elastomeric Coating

[DrivingForce]

yes plastic roofing tiles are available and used on more recent buildings. I lived in a cheeky built townhouse in Phuket where they used regular tiles on the front for appearance sakes and white plastic (fiberglass tiles) on the back away from view for cost savings. There was a distinct difference in house temp during the day when the sun was directly shining on the front darker tiles during the short period the sun hit them directly..

Those tiles were also beginning to slide out of position in a house that was only a couple of years old creating numerous leaks.
My perspective based on experience was that because they were thinner and smooth they were expanding and contracting more while heating and cooling as well as contorting and that was causing them to create more space for movement..That was magnified when it was a hot day and then it suddenly cooled them with rain..

[Airportwo]

I believe? the next best colour to white for heat reflection is blue, read this some time ago, explained why people have blue roofs, which look ?....................

[Jet Gorgon]

I thought attic space and insulation worked best. But, in Thailand, the lizards, touks and snakes move upstairs.

[Panda]

I live in the tropics and also a cyclone prone area.
All the new houses here have light coloured Colorbond metal roofs.
Lighter, cheaper, stronger and cooler than tiles. And quite aesthetically pleasing too.

Colorbond is available in Thailand too, but hasnt caught on yet.

[Jet Gorgon]

^ Wow, sidewalks!

[jandajoy]

^Yup, white colorbond is what I want. Works well here, and I read somewhere that it is available in LOS


BlueScope Steel Asia - Main Page

[Panda]

^ With insulation and roof vents, cant go past it. Will last 100 years. And NO LEAKS!

[Thetyim]

Yup, white colorbond is what I want.

Why not make roof tiles out of all those plastic bags you were going to collect ?

[jandajoy]

Why not make roof tiles out of all those plastic bags you were going to collect ?

Good idea....... but I'm not there. It went nowhere anyway. Best laid plans etc.

[peterpan]

^Yup, white colorbond is what I want. Works well here, and I read somewhere that it is available in LOS


BlueScope Steel Asia - Main Page

Better still is bonded Insulated long run colour bond, made some where in Bangkok, I can't understand why anyone would use anything else.

[BKKBILL]

Here are some color charts from down under about reflectivity.

Roof Paint, Roof Insulation, Roof Restoration, Reflective Paint, Concrete Paint: Colour Selection

[jandajoy]

Colour Name Solar Reflectivity BCA Rating White 80% VL Cream 82.1% VL


I'm surprised. Cream beats white for reflectivity.

[Marmite the Dog]

I think those aluminium roofing sheets are a good idea.

[DrAndy]

I suppose a lot of people think a light coloured roof looks cheap

you can get light colours in Chang sheet tiling

[johpam]

I suppose a lot of people think a light coloured roof looks cheap

you can get light colours in Chang sheet tiling

DrAndy what is Chang sheet tiling?
cheers johpam

[Dan]

There's also Beger Cool paint (Thavee Roong ::: Wood coating, Decorative, Speacial, Industrial.) which claims to reflect more than 94.2% of UV radiation.

[globin]

There's also Beger Cool paint (Thavee Roong ::: Wood coating, Decorative, Speacial, Industrial.) which claims to reflect more than 94.2% of UV radiation.

We used a similar product on a roller door, works pretty good.